TS-990S Main Receiver – The first mixer circuit, at the heart of the main receiver, is equipped with a new double balanced grounded switch type mixer.In order to prevent distortion when there is a large input signal, the signal route up to the first mixer includes sophisticated circuitry with carefully selected components – such as large-core toroidal coils and relays for signal switching between bands – resulting in a third-order intercept point of +40dBm (source: JVC Kenwood brochure) – Please click the pictures diagram to enlarge!

TS-990S 200W Trasmitter – The push-pull circuit utilizes VRF150MP 50V power MOSFETs to deliver a stable output of 200W on all bands. Engineers have determined the bias and matching conditions that ensure maximum possible benefit from the characteristics of the VRF150MP.Built-in automatic antenna tuner (ATU) is of the preset type and employs the relay approch, acclaimed for rapid operation. Cooling system capable of providing ample airflow to each unit. The TS-990 employs five independent variable-speed fans (.. IC-7700 employs Quad-fans!) are employed for the Switching Power Supply, the PA final section, and the ATU antenna tuner. (source: JVC Kenwood brochure) – Please click the pictures diagram to enlarge!